Titlebook: Biosynthesis, Metabolism and Mode of Action of Invertebrate Hormones; Jules Hoffmann,Maurice Porchet Conference proceedings 1984 Springer-

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Advances in Business Education and TrainingStudies carried out over the last 30 years have established the basic biological functions of the hormone secreted by the androgenic gland of higher crustaceans [1,2], but have not yet been able to reveal the chemical nature of this hormone.

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The Psychology of Music Learningollusc .. Our lab has purified three peptides that initiate egg-laying and the primary structure of these peptides has been determined [1, 2]. Recently, the genes for these three peptides have been cloned by Scheller et al. [3]. The nucleotide sequences confirm the primary structure data obtained on